256356328 has 16 divisors (see below), whose sum is σ = 508942980. Its totient is φ = 120638208.

The previous prime is 256356307. The next prime is 256356383. The reversal of 256356328 is 823653652.

It can be written as a sum of positive squares in 2 ways, for example, as 214856964 + 41499364 = 14658^2 + 6442^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942351 + ... + 942622.

Almost surely, 2^256356328 is an apocalyptic number.

It is an amenable number.

256356328 is a deficient number, since it is larger than the sum of its proper divisors (252586652).

256356328 is a wasteful number, since it uses less digits than its factorization.

256356328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884996 (or 1884992 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 256356328 is about 16011.1313778883. The cubic root of 256356328 is about 635.2548859996.

The spelling of 256356328 in words is "two hundred fifty-six million, three hundred fifty-six thousand, three hundred twenty-eight".